#m-wrapper{
    width:70%;
    position: relative;
}
#main{
    width: 100%;
    height: 90%;
    box-sizing: border-box;
    border: 1px solid black;
}
#main .main-top{
    width: 100%;
    height: 12%;
    box-sizing: border-box;
    border: 1px solid green;
}
#main .main-content{
    width: 100%;
    height: 88%;
    box-sizing: border-box;
    border: 1px solid yellow;
}
#main .main-content .content-nav{
    float: left;
    width: 20%;
    height: 100%;
    box-sizing: border-box;
    border: 1px solid black;
}
#main .main-content .content-music{
    float: left;
    width: 80%;
    height: 100%;
    box-sizing: border-box;
    border: 1px solid pink;
}
#shedule{
    width: 100%;
    height: 10%;
    box-sizing: border-box;
    border: 1px solid red;
}